Composition for laser marking
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United States of America Patent
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Oct 3, 2000
Grant Date -
N/A
app pub date -
Sep 25, 1998
filing date -
Sep 25, 1998
priority date (Note) -
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Abstract
A resin composition with laser marking properties comprises a polyester thermoplastic resin, a sufficient amount of channel black carbon pigment for forming a dark background coloration wherein said channel black carbon pigment decomposes in laser struck areas whereby light colored markings are obtained on the dark background.
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